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Long-running MCP servers on Bedrock: Strands Agents for durable state

Amazon Bedrock AgentCore uses MCP with Strands Agents to keep long-running agent tasks continuous across sessions. The approach centers on persistence, progress visibility, and resilient client/server messaging.

AWS described an Amazon Bedrock AgentCore architecture that pairs MCP with Strands Agents so MCP servers can keep work moving—and keep state intact—across sessions that may span multiple days.

  • MCP acts as the integration standard connecting agents to server-side resources in the Bedrock ecosystem.
  • Strands Agents provides the persistent state layer, enabling tasks to resume cleanly instead of restarting after a disconnect.
  • A context message strategy keeps server/client communication continuous during long-running operations.
  • The design supports data processing jobs that run for hours or days, with results retrievable after completion.
  • Persisted state reduces timeout-driven failure modes and helps avoid data loss when a client connection ends unexpectedly, while preserving progress visibility when users return later.